WO2008059788A1 - Dispositif d'étanchéité équipé d'un capteur, et dispositif de palier à roulement apte à être utilisé dans un véhicule et utilisant le dispositif d'étanchéité - Google Patents

Dispositif d'étanchéité équipé d'un capteur, et dispositif de palier à roulement apte à être utilisé dans un véhicule et utilisant le dispositif d'étanchéité Download PDF

Info

Publication number
WO2008059788A1
WO2008059788A1 PCT/JP2007/071905 JP2007071905W WO2008059788A1 WO 2008059788 A1 WO2008059788 A1 WO 2008059788A1 JP 2007071905 W JP2007071905 W JP 2007071905W WO 2008059788 A1 WO2008059788 A1 WO 2008059788A1
Authority
WO
WIPO (PCT)
Prior art keywords
sensor
magnetic
fixed
sealing device
magnetic encoder
Prior art date
Application number
PCT/JP2007/071905
Other languages
English (en)
Japanese (ja)
Inventor
Katsura Koyagi
Tetsuaki Numata
Nobutsuna Motohashi
Naoki Morimura
Original Assignee
Jtekt Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2006310307A external-priority patent/JP2008128268A/ja
Priority claimed from JP2007051250A external-priority patent/JP2008215920A/ja
Application filed by Jtekt Corporation filed Critical Jtekt Corporation
Priority to US11/792,435 priority Critical patent/US20100027927A1/en
Priority to EP07831635A priority patent/EP2085630A4/fr
Publication of WO2008059788A1 publication Critical patent/WO2008059788A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7886—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a race
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
    • F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
    • F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
    • F16C19/186—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement with three raceways provided integrally on parts other than race rings, e.g. third generation hubs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/007—Encoders, e.g. parts with a plurality of alternating magnetic poles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/443—Devices characterised by the use of electric or magnetic means for measuring angular speed mounted in bearings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors

Definitions

  • the present invention relates to a sealing device with a sensor for a rolling bearing used for, for example, a rolling bearing device that supports wheels of an automobile or the like, and a rolling bearing device for a vehicle using the same.
  • Patent documents;! To 3 include an inner ring (rotation-side raceway) to which a wheel is attached, an outer ring (fixed-side raceway) fixed to the vehicle body, and a rolling element disposed between the inner and outer rings. It has been proposed that a sensor unit be provided in a hub unit (rolling bearing device) having the above.
  • Some rolling bearing devices that support wheels of automobiles or the like incorporate a sensor device for detecting the rotational speed of the wheels in order to control an antilock brake system or the like.
  • a conventional rolling bearing device with a sensor includes, for example, a magnetic encoder installed on the inner shaft (rotating wheel) side and a magnetic sensor facing the magnetic encoder as described in Patent Document 1 below. And have! /
  • a magnetic powder such as ferrite is mixed in an elastic member made of rubber or the like, and a shaft of a member (slinger) on the rotating wheel side of a sealing device that seals the elastic member with an annular opening between the inner and outer rings.
  • the magnetic sensor is provided with a magnetic detection element, and is arranged on the outer side in the axial direction of the rotating wheel so that its detection surface faces the detection surface of the magnetic encoder.
  • an annular cored bar for attaching a seal member for sealing between the inner ring and the outer ring is fixed to the outer ring, and a resin member embedded with a magnetic sensor is integrated into the cored bar by insert molding. Is formed.
  • the magnetic sensor is configured to detect the rotation speed of the rotating wheel by detecting a change in the magnetic field from the magnetic encoder according to the rotation of the rotating wheel.
  • Patent Document 1 Japanese Unexamined Patent Publication No. 2006-220270
  • Patent Document 2 Japanese Unexamined Patent Publication No. 2005-133772
  • Patent Document 3 Japanese Patent Application Laid-Open No. 2004-264056
  • the conventional rolling bearing device is configured such that the magnetic sensor is arranged on the outer side in the axial direction of the rotating wheel, the axial length is relatively large, and a reduction in size is required. This type of rolling bearing device may be difficult to apply.
  • a slinger 107 having a magnetic encoder 101 on the outer peripheral side and fixed to the outer peripheral side of the inner ring 102, an annular main body 104 in which the magnetic sensor 103 is embedded, and a cored bar
  • a sealing device 109 having a sensor portion 106 integrally formed with 105, attempts have been made to reduce the size by reducing the axial dimension of the rolling bearing device.
  • the magnetic sensor 103 is embedded in the main body 104 to which the core metal 105 is fixed, for example, as shown in FIG. Since the core metal 105 is interposed between the magnetic encoder 101 and the like, the degree of freedom in layout becomes low, and the gap between the magnetic encoder 101 and the sensor unit 106 has to be increased. As described above, when the gap between the two becomes large, the magnetic sensor 103 may not be able to secure a sufficient magnetic force to detect the change of the magnetic pole by the magnetic encoder 101.
  • the shape of the cored bar is set so as not to be interposed between the magnetic sensor and the magnetic encoder. Then, a part of the core metal is interposed between the magnetic sensor and the encoder.
  • Patent Document 3 discloses using a nonmagnetic material as the core metal.
  • the cored bar having such a configuration has a bent shape in order to bring the elastic seal into contact with the inner ring side, and plastic processing such as press working is necessary to obtain such a shape.
  • a non-magnetic metal that can be used as a material for the core metal for example, SUS304, which is an austenitic stainless steel, is known. SUS304 has a property of being magnetized and hardened by press working. Therefore, when such a material is used for the cored bar, non-magnetization is required so that the detection accuracy of the magnetic sensor does not deteriorate due to magnetism generated by processing.
  • the present invention has been made in view of such circumstances, and a sealing device with a sensor for a rolling bearing device capable of securing a sufficient magnetic force to the sensor, and rolling for a vehicle using the same.
  • An object is to provide a bearing device.
  • an annular slinger fixed to a rotating wheel a magnetic encoder fixed to the slinger so as to rotate integrally therewith, and fixed to a fixed wheel
  • a metal core having a seal member that is in sliding contact with the slinger
  • a sensor unit having a magnetic sensor that detects relative rotation between the fixed wheel and the rotating wheel by a change in magnetic pole by the magnetic encoder
  • the magnetic encoder is composed of a plastic magnet containing magnetic powder in a state where the magnetic field is oriented in a predetermined direction! /
  • the plastic magnet since the magnetic powder contained in the plastic magnet constituting the magnetic encoder is magnetically oriented, the plastic magnet is When magnetized, the magnetic flux density in the direction of magnetic field orientation increases.
  • High magnetic force is applied. That is, when a large number of magnetic poles are arranged and magnetized in the circumferential direction to give the plastic magnet a function as a magnetic encoder, a magnetic encoder having a high magnetic force can be obtained.
  • the sealing device with a sensor when the thermal expansion coefficient differs greatly from that of the magnetic encoder, the magnetic encoder is fixed with a buffer member made of an elastic body interposed between the magnetic encoder and the slinger. ! / By doing so, when the slinger and the magnetic encoder expand and contract with temperature change, the buffer member allows the difference in deformation amount generated between the slinger and the magnetic encoder, and is relatively fragile. Damage to the magnetic encoder made of plastic magnets can be prevented.
  • the slinger may be formed with a step portion for restricting relative movement of the magnetic encoder in the axial direction and the radial direction.
  • the magnetic encoder can be prevented from moving relative to the slinger by the step provided on the slinger without firmly fixing the magnetic encoder with a high press-fitting margin with respect to the slinger.
  • the force S can be fixed securely so that it can rotate integrally. Therefore, even when the buffer member is interposed between the magnetic encoder and the slinger as described above, the magnetic encoder can be reliably fixed to the slinger so as to be integrally rotatable.
  • the slinger has an annular support member that is fixed to a peripheral surface thereof and supports the magnetic encoder, and the step portion is formed on the support member. It ’s nice to be!
  • the step surface is formed on the support member which is a separate member from the slinger fixed to the rotating wheel, the step surface can be easily formed.
  • the present invention provides a fixed wheel fixed to the vehicle body side, a rotating wheel to which the wheel is fixed, a plurality of rolling elements interposed between the two wheels, and a block between the two wheels and a relative relationship between the two wheels.
  • a rolling bearing device for a vehicle comprising a sealing device with a sensor having a sensor for detecting rotation, wherein the sealing device with a sensor is the above-described sealing device with a sensor.
  • the rolling bearing device for a vehicle configured as described above, high magnetic force can be applied to the magnetic encoder as described above, so that the gap between the magnetic encoder and the sensor unit is Even if this becomes large, a sufficient magnetic force can be secured to the sensor unit by the high magnetic force of the magnetic encoder.
  • annular slinger fixed to a rotating wheel
  • the core metal is formed by plastic working, and at least a part thereof is interposed between the magnetic sensor and the magnetic encoder, and is further made of a nonmagnetic material that is difficult to be magnetized by the plastic working. To do.
  • the sealing device with a sensor is a rolling bearing device for vehicles, which is the sealing device with a sensor described above.
  • the core metal is formed by, for example, press working or the like, it is not magnetized by the working and does not adversely affect the detection accuracy of the magnetic sensor.
  • nonmagnetic material constituting the core metal for example, SUS304L or SUS305 is used, and the force S is used.
  • the core metal includes an outer cylindrical portion fitted and fixed to the fixed ring, a first flange portion extending radially inward from an axially inner end of the outer cylindrical portion, and a first flange
  • the inner peripheral cylindrical portion that extends from the inner end to the outer side in the axial direction through the space between the magnetic sensor and the pulser, and from the outer end in the axial direction of the inner peripheral cylindrical portion to the rotating side raceway
  • the second flange portion is provided with a seal body that seals between the second flange portion and the rotating wheel side! /.
  • the magnetic encoder is covered from the outside in the axial direction by the second flange portion and the sealing body, and the force S is used to protect the magnetic encoder from water or the like that is about to enter the bearing device.
  • the magnetic sensor is configured to prevent the magnetic sensor from adversely affecting the detection accuracy of the magnetic sensor by the cored bar interposed between the magnetic sensor and the magnetic encoder. A sufficient magnetic force of the coder can be secured.
  • FIG. 1 is a cross-sectional view showing a configuration of a rolling bearing device for a vehicle provided with a sensor-equipped sealing device according to a first embodiment of the present invention.
  • FIG. 2 is an enlarged partial cross-sectional view of the main part in FIG.
  • FIG. 3 (a) is a partial external view showing a part of the support member, and (b) is a cross-sectional view taken along the line AA in FIG.
  • FIG. 4 is a diagram schematically showing an embodiment of a magnetic powder contained in a plastic magnet by being magnetically oriented.
  • FIG. 5 (a) is a partial cross-sectional view of a main part of a sealing device with a sensor according to a second embodiment of the present invention
  • FIG. 5 (b) is a partial external view showing a part of a support member. It is.
  • FIG. 6 is a partial sectional view showing a modification of the sealing device with a sensor according to the second embodiment.
  • FIG. 7 is a cross-sectional view of a rolling bearing device according to a third embodiment of the present invention.
  • FIG. 8 is a front view of a rolling bearing device according to a third embodiment.
  • FIG. 9 is an enlarged cross-sectional view showing a main part of a third embodiment of the present invention.
  • FIG. 10 is a partial sectional view showing a conventional sealing device with a sensor.
  • FIG. 1 is a cross-sectional view showing a configuration of a rolling bearing device for a vehicle provided with a sensor-equipped sealing device according to a first embodiment of the present invention.
  • the rolling bearing device 1 for a vehicle supports a wheel of a vehicle such as an automobile so as to be rotatable with respect to a suspension device.
  • a rolling bearing device 1 for a vehicle constitutes a double-row angular ball bearing.
  • An inner shaft 2 having a flange portion 2a to which a wheel (not shown) is attached at one end, an outer ring 3 disposed concentrically on the outer peripheral side of the inner shaft 2, and a rolling element interposed between the inner shaft 2 and the outer ring 3.
  • the rolling bearing device 1 for a vehicle further includes a seal 6 that seals the annular gap between the inner shaft 2 and the outer ring 3 on one axial end side, and a sensor that seals the annular gap on the other axial end side.
  • a sealing device 7 With a sealing device 7.
  • the outer ring 3 is a fixed ring fixed to the vehicle side, and an outer peripheral surface is formed with a mounting flange 3a for mounting on a suspension device of the vehicle. Further, first and second outer ring raceways 3b and 3c on which the balls 4 roll are formed on the inner peripheral surface thereof.
  • the inner shaft 2 is an axle to which the wheel is attached and constitutes a rotating wheel of the rolling bearing device 1 for the vehicle.
  • a plurality of hub bolts 2al for fixing the wheel to the flange portion 2a are fixed to the flange portion 2a formed at one end of the inner shaft 2.
  • a first inner ring raceway 2 b is formed on the outer peripheral surface of the inner shaft 2 so as to face the first outer ring raceway 3 b.
  • a small-diameter portion 8 having a smaller diameter than the outer peripheral surface of the inner shaft 2 is formed at the other end portion of the inner shaft 2, and the second inner-ring raceway facing the second outer ring raceway 3c is formed in the small-diameter portion 8.
  • An annular inner ring member 9 having 2c formed on the outer peripheral surface is externally fitted.
  • the rolling bearing device 1 for a vehicle supports the inner shaft 2 rotatably with respect to the outer ring 3 and supports the wheels fixed to the inner shaft 2 rotatably.
  • the sensor-sealed sealing device 7 that seals the annular gap between the inner shaft 2 and the outer ring 3 includes:
  • An annular slinger 10 that is externally fitted and fixed to the outer peripheral surface of the inner ring member 9, an annular magnetic encoder 11 that is fixed to the slinger 10 so as to rotate together, and an inner peripheral surface on the other end side of the outer ring 3. And a sensor part 12 fitted and fixed to 3d.
  • the sensor unit 12 is formed in an annular shape with resin or the like, and an annular main body portion 12a in which a magnetic sensor 13 described later is embedded, and an annular core fixed to the main body portion 12a.
  • the connector 12b is connected to a harness from a vehicle control device on which the rolling bearing device 1 for the vehicle is mounted, and is configured to output a detection signal of the magnetic sensor 13 to the control device with a force S. /!
  • the main body 12a is formed with a protruding portion 12al protruding toward one end in the axial direction along the peripheral edge of the inner diameter end portion, and the cored bar extends along the inner and outer peripheral surfaces and the end surface of the protruding portion 12al. 14 is fixed.
  • FIG. 2 is an enlarged partial cross-sectional view of the main part in FIG.
  • the core metal 14 is formed by pressing cold-rolled steel plate such as SPC C, SPCD, SPCE, or stainless steel plate, and has an outer cylindrical portion 14a along the outer peripheral surface of the protruding portion 12al, and a protruding portion. It has a substantially U-shaped cross section by having an inner cylindrical part 14b along the inner peripheral surface of 12al and an annular part 14c along the end surface of the projecting part 12al and connecting the ends of both cylindrical parts 14a and 14b in the axial direction. It is formed into a mold.
  • an edge portion 14d extending in the radially inward direction is formed at the other end side end portion of the inner cylinder portion 14b, and the slinger 10 and the sensor portion 12 are connected to the inner peripheral end portion of the edge portion 14d.
  • a sealing member 15 for sealing the gap is fixed by vulcanization adhesion or the like.
  • the seal member 15 is a member formed in an annular shape by an elastic body such as rubber, and has a plurality of seal lips 15 a that are in sliding contact with the outer peripheral surface of the slinger 10 fixed to the inner ring member 9.
  • the magnetic sensor 13 described above is embedded in the protruding portion 12al of the sensor portion 12.
  • This magnetic sensor 13 detects a change in magnetic pole that occurs when a magnetic encoder 11 described later rotates together with the inner shaft 2 and outputs a detection signal thereof.
  • the magnetic sensor 13 is located between the cylindrical portions 14a and 14b by being disposed inside the protruding portion 12al.
  • the slinger 10 has a cylindrical portion 16a that is externally fitted to the inner ring member 9, and a main body portion that is formed in an L-shaped section having an annular portion 16b that extends radially outward from the other axial end of the cylindrical portion 16a. 16 has.
  • the annular portion 16b of the main body portion 16 is formed so as to face the edge portion 14d of the cored bar 14.
  • the plurality of seal lips 15a of the seal member 15 fixed to the edge portion 14d are formed so that the tips thereof are in sliding contact with the side surface of the annular portion 16b and the outer peripheral surface of the cylindrical portion 16. 15 between slinger 10 and core 14 Is sealed.
  • the slinger 10 further includes an annular support member 17 that is fitted and fixed to the outer peripheral surface of the cylindrical portion 16a and supports the magnetic encoder 11 on the outer peripheral side thereof.
  • the support member 17 is fixed to the cylindrical portion 16a so as to be disposed on the inner peripheral side of the inner cylindrical portion 14b of the core metal 14, and includes an inner cylindrical portion 17a fitted on the outer peripheral surface of the cylindrical portion 16a.
  • the outer cylindrical portion 17b disposed on the outer peripheral side of the inner cylindrical portion 17a and the annular portion 17c that connects one side in the axial direction of both the cylindrical portions 17a and 17b are formed in a U-shaped cross section. .
  • FIG. 3A is a partial external view showing a part of the support member 17.
  • a notch 18 is formed at the end of the outer cylindrical portion 17b of the support member 17 on the other end side in the axial direction with a predetermined interval in the circumferential direction.
  • a protruding portion 19 that protrudes in the radially inward direction from the inner peripheral surface of the outer cylindrical portion 17b is formed at the end of the outer cylindrical portion 17b on the other end side in the axial direction.
  • the main body 16 and the support member 17 of the slinger 10 are formed by pressing cold-rolled steel plates such as SPCC, SPCD, SPCE, etc.
  • the magnetic encoder 11 supported by the support member 17 so as to be integrally rotatable is formed in an annular shape using a plastic magnet, and the outer cylinder portion 17b of the support member 17 is formed.
  • a cylindrical portion 11a disposed on the outer peripheral surface side, and a wraparound portion that extends from the end portion of the cylindrical portion 11a and covers the end portion of the outer cylindrical portion 17b and the protruding portion 19 on the inner peripheral surface side thereof. 1 lb.
  • the cylindrical portion 11a of the magnetic encoder 11 is disposed so as to face the inner cylindrical portion 14b of the core metal 14 with a slight gap, and is embedded in the protruding portion 12al of the main body portion 12a of the sensor portion 12.
  • the magnetic sensor 13 is disposed on the inner side through a part of the main body 12a, the inner cylinder 14b, and the gap. Further, the cylindrical portion 11a is magnetized so that the N pole and the S pole are arranged at predetermined positions along the circumferential direction. For this reason, the magnetic encoder 11 that rotates integrally with the inner shaft 2 can change the magnetic pole with respect to the magnetic sensor 13 in accordance with the rotation of the inner shaft 2.
  • the magnetic sensor 13 detects a magnetic pole that changes in accordance with the rotation of the inner shaft 2, and outputs a detection signal to the vehicle control device.
  • the control device uses the detection signal of the magnetic sensor 13 as a detection signal. Based on this, the rotational speed of the inner ring 2 is recognized and reflected in the control of the anti-lock brake system of the vehicle.
  • the cylindrical portion 11a of the magnetic encoder 11 is disposed between the outer cylindrical portion 17b of the support member 17 with a buffer member 20 made of an elastic body such as rubber interposed therebetween.
  • the thermal expansion coefficient may differ greatly between the support member 17 on the slinger 10 side made of a steel plate and the magnetic encoder 11 made of a plastic magnet, and when these expand and contract with deformation due to temperature changes. A difference in deformation occurs between the support member 17 and the magnetic encoder 11.
  • the buffer member 20 interposed between the magnetic encoder 11 and the support member 17 It is possible to prevent gaps between them and to prevent foreign matter from entering between them. As a result, deterioration of the magnetic encoder 11 can be prevented.
  • a protrusion l lbl is formed at the tip end in the axial direction of the wraparound portion l ib so as to protrude radially outward and abut on the side portion 19a of the protruding portion 19 of the outer cylinder portion 17b.
  • the wraparound portion l ib is also in contact with the end portion of the outer tube portion 17b. In this manner, the magnetic encoder 11 and the support member 17 are prevented from relatively moving in the axial direction by bringing the wraparound portion l ib into contact with the side portion 19a of the protruding portion 19 and the end portion of the outer cylindrical portion 17b. can do.
  • a fitting portion 1 lb2 fitted into the notch portion 18 of the outer cylindrical portion 17b is formed on the inner side surface of the wraparound portion l ib facing the support member 17!
  • FIG. 3 (b) is a cross-sectional view taken along line AA in FIG.
  • the fitting portion l lb2 protrudes in the radial direction corresponding to the cutout portion 18 and abuts against the wall portion 18a of the cutout portion 18.
  • the side portion 19a of the protrusion 19 and the wall portion 18a of the cutout portion 18 formed in the outer cylinder portion 17b prevent the magnetic encoder 11 from moving relative to the slinger 10 in the axial direction and the radial direction, respectively.
  • the step part to regulate is constituted, and these, side part 19a and wall part 18a, Relative movement of the magnetic encoder 11 can be prevented without firmly fixing the magnetic encoder 11 to the outer cylinder portion 17b with a high press-fitting margin. Therefore, when the buffer member 20 made of an elastic body is interposed between the magnetic encoder 11 and the support member 17 as in the present embodiment, it is particularly effective for fixing the magnetic encoder 11. .
  • the support member 17 which is a separate member from the main body portion 16, is provided with the side portion 19 a of the protruding portion 19 and the wall portion 18 a of the notch portion 18.
  • the side portions 19a and the wall portions 18a constituting the step portion can be easily formed.
  • the plastic magnet used in the magnetic encoder 11 contains a large number of magnetic powders, and this magnetic powder provides a function as a magnet.
  • the ferrite powder as the magnetic powder is mixed with a resin material such as polyphenylene sulfide (PPS) resin or polyamide (PA) resin, and then formed into a predetermined shape.
  • PPS polyphenylene sulfide
  • PA polyamide
  • the magnetic powder contained in the plastic magnet constituting the magnetic encoder 11 of the present embodiment is in a state where the magnetic field is oriented in a predetermined direction.
  • FIG. 4 is a view schematically showing an embodiment of the magnetic powder contained in the plastic magnet by being magnetically oriented.
  • the plastic magnet M is composed of a resin portion J forming the plastic magnet M and a large number of magnetic powders P.
  • the plastic magnet M contains a large number of magnetic powders P.
  • ferrite powder having magnetic (or shape) anisotropy is used.
  • this anisotropy is schematically shown as an ellipse, with one end being the N pole and the other end being the S pole.
  • These magnetic powders P are formed, for example, by applying a magnetic field in the direction of arrow H as a predetermined direction in FIG. 4 when the magnetic powder P and a resin material are mixed to form a predetermined shape. To do.
  • the magnetic powder P having magnetic anisotropy is oriented along the direction of the magnetic field as shown in FIG. Formed as M.
  • the magnetic powder P in a state in which the magnetic field is oriented in a predetermined direction Containing! / The ability to obtain plastic magnet M can be S.
  • polyamide 6 and polyamide 12 are preferred, and the resistance when the magnetic powder P having a relatively low viscosity at the time of formation is oriented can be kept low.
  • the magnetic powder P can be effectively oriented.
  • the plastic magnet contains the magnetic powder P in a state of being oriented in a predetermined direction, when it is subsequently magnetized, the magnetic powder P has a predetermined value as compared with that in which the magnetic powder P is not magnetically oriented.
  • the direction force and magnetic flux density can be increased in the direction, and a high magnetic force can be obtained in the predetermined direction.
  • the plastic magnet M in the figure is the outer peripheral surface of the cylindrical portion 17b
  • the lower surface is the inner peripheral surface
  • the direction of the magnetic field orientation is the direction along the radial direction, it is contained. Since the magnetic powder P is oriented in the direction along the outer diameter direction, the plastic magnet M magnetized thereafter can increase the direction force and the magnetic flux density in the outer diameter direction. High magnetic force can be obtained in the outward direction.
  • the magnetic powder contained in the plastic magnet constituting the magnetic encoder 11 is in a state of magnetic field orientation. Therefore, when the plastic magnet is magnetized, the magnetic flux density in the direction in which the magnetic field is oriented increases, and a high magnetic force is applied. That is, when a plurality of magnetic poles are arranged and magnetized in the circumferential direction in order to give the plastic magnet a function as the magnetic encoder 11, a magnetic encoder having a high magnetic force can be obtained.
  • the magnetic sensor 11 Even if a metal core 14 or the like is interposed between the magnetic encoder 11 and the magnetic sensor 13 and the gap between the two becomes large, the magnetic sensor 11 has a sufficient magnetic force against the magnetic sensor 13 due to the high magnetic force of the magnetic encoder 11. Can be secured.
  • the sealing device 7 when trying to further downsize the rolling bearing device 1 for a vehicle, the sealing device 7 must naturally be downsized, and accordingly, the magnetic encoder 11 needs to be downsized. Occurs.
  • the magnetic encoder 11 When the magnetic encoder 11 is downsized, the actual area for generating the magnetism of the magnetic encoder 11 is reduced, so that the magnetic force is weakened, and there is a risk that the magnetic force necessary for the sensor cannot be secured. Even in such a case, in the present embodiment, since a sufficient magnetic force can be secured by applying a high magnetic force to the magnetic encoder 11, further downsizing of the rolling bearing device 1 for a vehicle and the sealing device 7 with a sensor 7 is achieved. Can also be planned.
  • FIG. 5 (a) is a partial cross-sectional view of the main part of the sealing device with a sensor according to the second embodiment of the present invention
  • FIG. 5 (b) shows a part of the support member. It is a partial external view.
  • the magnetic encoder 11 has an annular shape with a substantially rectangular cross section
  • the support member 17 has an L-shaped cross section along the outer surface of the magnetic encoder 11. It is a point that has been done. Since other configurations are the same as those of the first embodiment, description thereof is omitted.
  • the support member 17 in the slinger 10 of the sealing device with sensor 7 includes a cylindrical portion 17d that is externally fitted and fixed to the main body portion 16, and a radially outward direction from one axial end portion of the cylindrical portion 17d.
  • the cross section is formed in an L shape having an annular portion 17e extending.
  • the magnetic encoder 11 is fitted and fixed to the outer peripheral surface of the cylindrical portion 17d, and is disposed along the side surface of the annular portion 17e. Therefore, the thickness dimension of the magnetic encoder 11 is set larger than that of the first embodiment having the support member 17 having a U-shaped cross section.
  • a protruding portion 21 that protrudes radially outward from the outer peripheral surface of the cylindrical portion 17d is formed at the tip of the cylindrical portion 17d.
  • a stepped portion 11c corresponding to the protruding portion 21 is formed on the inner peripheral surface of the magnetic encoder 11, and the magnetic encoder 11 is fitted between the side portion 21a of the protruding portion 21 and the annular portion 17e. Is held. That is, the side portion 2 la as the stepped portion of the protruding portion 21 can prevent the magnetic encoder 11 and the support member 17 from relatively moving in the axial direction.
  • a cutout portion 22 is formed at the outer peripheral end of the annular portion 17e.
  • the cutout portion 22 is cut out radially inward at a predetermined interval in the circumferential direction.
  • the end surface on the one end side in the axial direction of the magnetic encoder 11 is formed with a fitting portion l lb2 fitted into the notch 22 as in the first embodiment, and the fitting portion l lb2 By abutting against the wall portion 22a as the step portion of the cutout portion 22, it is possible to prevent the magnetic encoder 11 and the support member 17 from moving in the radial direction.
  • the support member 17 has an L-shaped cross section, and Since the thickness dimension of the coder 11 is set large, the rigidity of the magnetic encoder 11 can be increased. For this reason, it is possible to provide a simple structure that does not require the buffer member for preventing damage to the magnetic encoder 11 shown in the first embodiment to be interposed between the magnetic encoder 11 and the support member 17. Cost reduction can be achieved.
  • the plastic magnet constituting the magnetic encoder 11 can be directly injection-molded on the support member 17.
  • the magnetic encoder 11 can be more securely fixed to the slinger 10 (support member 17) and the step of fitting the magnetic encoder 11 into the support member 17 can be omitted.
  • the assembly process can be simplified.
  • a buffer member can be interposed between the support member 17 and the magnetic encoder 11 as in the first embodiment, although the cost and assembly process increase.
  • the present invention is not limited to the above-described embodiment.
  • the magnetic powder contained in the plastic magnet is exemplified by the case where the magnetic powder has magnetic anisotropy and is magnetically oriented.
  • the magnetic powder is magnetic based on the shape anisotropy of the magnetic powder. It may be a magnetic powder with magnetic orientation.
  • the magnetic powder used for the plastic magnet constituting the magnetic encoder can be a force exemplified by the use of ferrite powder, or rare earth magnetic powder such as neodymium or samarium. A high repulsive magnetic force can be applied by the magnetic encoder.
  • a non-magnetic material such as SUS304L or SUS305 can be used for the core metal.
  • the force is such that the support member 17 is interposed between the main body portion 16 of the slinger 10 and the magnetic encoder 11, for example, as shown in Figs. 6 (a) and 6 (b).
  • the configuration may be such that the body portion 16 of the slinger 10 is directly fitted and fixed to the cylindrical portion 16a.
  • the side portion 23a of the protruding portion 23 serves as a step portion that restricts the relative movement of the magnetic encoder 11.
  • a wall 24a of the notch 24 can be provided.
  • plastic directly against the body 16 Magnets can also be injection molded.
  • the sensor-equipped sealing device shown in FIG. 6 does not have the support member 17 of each of the above embodiments, so that a simpler structure can be achieved and further cost reduction can be achieved.
  • FIG. 7 is a sectional view of the rolling bearing device 110 according to the third embodiment of the present invention
  • FIG. 8 is a front view of the rolling bearing device 110.
  • the rolling bearing device 110 includes a base unit 111 and a sensor device 112.
  • the hub unit 111 includes an outer ring (fixed wheel) 113 fixed to the vehicle body side, an inner ring (rotating wheel) 114 to which the wheel is attached, and a plurality of balls (rolling elements) 115 disposed between the outer ring 113 and the inner ring 114. And a cage 116 for holding the ball 115.
  • the left side of the hub unit 111 is the vehicle body side (inner side), and the right side is the wheel side (outer side).
  • the direction of force from the central side of the hub unit 111 toward the inner side and the outer side is referred to as the axially outward direction
  • the direction of force from the inner side and the outer side toward the central side in the axial direction of the hub unit is referred to.
  • the direction is the axially inward direction.
  • the outer ring 113 includes a cylindrical portion 119 having two rows of raceway surfaces 119A on the inner peripheral surface, and a flange portion 120 that protrudes radially outward from the outer peripheral surface of the cylindrical portion 119.
  • the outer ring 113 is attached to the vehicle body by bolts at the flange portion 120.
  • the inner ring 114 includes a hub ring 122 and a cylindrical ring 123 fitted to the inner peripheral surface of the hub ring 122.
  • the hub wheel 122 has a cylindrical portion 124 and a flange portion 125 projecting radially outward from the outer peripheral surface of the cylindrical portion 124, and the wheel is attached to the flange portion 125 with bolts.
  • One row of raceway surfaces 124A and 123A are formed on the outer circumferential surface of the cylindrical portion 124 and the outer circumferential surface of the cylindrical ring 123.
  • a plurality of balls 115 are arranged in two rows in the axial direction.
  • an elastic seal 127 is provided between the inner peripheral surface of the outer side end portion of the outer ring 113 and the outer peripheral surface of the cylindrical portion 124 of the hub ring 122 to prevent mud from entering the bearing.
  • a seal device 128 is also provided at the inner end of the outer ring 113 and the inner ring 114 to prevent intrusion of mud or the like.
  • FIG. 9 is an enlarged cross-sectional view showing a main part of the present invention.
  • the sealing device 128 constituting the sensor-equipped sealing device in the present embodiment is a fixed-side seal fixed to the outer ring 113.
  • the member 130 includes a rotation-side seal member 131 fixed to the inner ring 114.
  • the fixed-side seal member 130 includes a cored bar 132, a resin member 133 integrated with the cored bar 132 by insert molding, a magnetic sensor 134 disposed in the resin member 133, and an elastic bonded to the cored bar 132.
  • a seal (seal body) 135 is provided.
  • the core bar 132 is formed in an annular shape, and includes an outer peripheral side cylindrical portion 137 extending along the axial direction at an outer end portion in the radial direction, and radially inward from an outer end portion of the cylindrical portion 137.
  • An outer flange portion (first flange portion) 138 extending in the direction, an inner peripheral cylindrical portion 139 extending from the radial inner end portion of the outer flange portion 138 in the axial direction toward the inner side, and the inner peripheral side
  • an inner flange portion (second flange portion) 140 extending radially inward from the inner end portion of the cylindrical portion 139.
  • the cylindrical portions 137 and 139 and the flange portions 138 and 140 are integrally formed by pressing (deep drawing) a metal plate!
  • the outer peripheral side cylindrical portion 137 of the metal core 132 constitutes a fitting portion that is fitted to the inner peripheral surface of the inner side end portion of the outer ring 113, and the inner side flange portion 140 is the rotation side sealing member 131.
  • a seal mounting portion for mounting an elastic seal 135 that seals between the two is configured.
  • the resin member 133 is formed in an annular shape, and is integrated by inner side end force S insert molding of the outer peripheral side cylindrical portion 137 of the core bar 132.
  • the resin member 133 is filled in a space S surrounded by the outer peripheral side cylindrical portion 137, the outer side flange portion 138, and the inner peripheral side cylindrical portion 139 of the cored bar 132.
  • a protrusion 141 is provided on the top of the resin member 133 so as to protrude to the inner side and the radially outer side.
  • a connector portion 142 for attaching a harness connecting the signal processing means provided on the vehicle body side and the magnetic sensor 134 is integrally formed at the upper end of the protruding portion 141.
  • the connector 142 is provided with a signal connector pin 143, and is connected to the magnetic sensor 134, the connector pin 143, and the force lead wire 144 and the like.
  • a sensor device 112 is configured by the magnetic sensor 134, the connector 142, the connector pin 143, the lead wire 144, the signal processing means, and the like.
  • the sensor device 112 is incorporated in the hub unit 111 as an ABS sensor.
  • the magnetic sensor 134 is arranged in the resin member 133 in the space S to constitute a sensor unit. And the sensing surface 134a of the magnetic sensor 134 is It faces radially inward.
  • the rotation-side seal member 131 has a slinger 146 fixed to the inner ring 114 and a pulsar 147 fixed to the outer peripheral surface of the slinger 146.
  • the slinger 146 is formed in a substantially L-shaped cross section by a cylindrical portion 148 extending along the axial direction and a flange portion 149 extending radially outward from the inner side end of the cylindrical portion 148.
  • the outer side of the cylindrical portion 148 is fitted to the inner peripheral surface of the cylindrical ring 123 in the inner ring 114.
  • the inner side of the cylindrical portion 148 protrudes in the axial direction from the cylindrical ring 123 toward the inner side.
  • the non-resa 147 is configured to output a rotation signal by alternately arranging N poles and S poles, and is composed of a support force 150 and a magnetic encoder 151.
  • the support ability 150 is formed in an annular shape from a magnetic metal such as SUS430. Further, the support member 150 is formed in a substantially U-shaped cross section, and the magnetic encoder 151 is bonded to the outer peripheral surface, and the magnetic encoder 151 is crimped in the inner peripheral direction on both axial sides of the outer peripheral surface. It is secured. The inner peripheral surface of the support member 150 is fitted to the outer peripheral surface of the cylindrical portion 148 of the slinger 146.
  • the magnetic encoder 151 is formed by magnetizing magnetic powder using rubber as a binder, and faces the sensing surface 134 a of the magnetic sensor 134 embedded in the resin member 133.
  • the inner side outer peripheral surface of the cylindrical portion 148 of the slinger 146 and the outer side surface of the flange portion 149 are seal receiving surfaces with which the elastic seal 135 of the fixed side seal member 130 abuts.
  • a single bow arch 135 has a lip 135a, 135b that comes into contact with the outer peripheral surface of the cylindrical member, and a lip portion 135c that comes into contact with the outer side surface of the flange 149.
  • the inner peripheral surface of the resin member 133 and the slinger Intrusion of water or the like (indicated by arrow a) into the bearing device 110 from the gap between the outer end of the radial direction 146 is prevented! /.
  • the radially outer side is covered by the inner peripheral cylindrical portion 139 of the core metal 132, and the inner side (axially outer side) is covered by the inner flange portion 140 of the core metal 132 and the elastic seal 135. It has been broken. Therefore, it is completely protected from entering water as indicated by the arrow a.
  • the outer peripheral side cylindrical portion 137, the outer side flange portion 138, and the inner peripheral side cylindrical portion 139 of the cored bar 132 are bonded to the resin member 133. Therefore, the metal core 132 and the resin member 133 are It can be firmly bonded with a large bonding area.
  • the inner peripheral cylindrical portion 139 of the core metal 132 is interposed between the magnetic sensor 134 and the magnetic encoder 151 of the pulser 147. Therefore, if the core bar 132 is magnetized, the detection of the magnetic encoder 151 by the magnetic sensor 134 may be adversely affected. Therefore, in the present embodiment, a non-magnetic material is used as the core metal 132.
  • the core metal 132 is bent at a plurality of positions to form the outer peripheral side cylindrical portion 137, the outer side flange portion 138, the inner peripheral side cylindrical portion 139, and the inner side flange portion 140 as described above. Therefore, it is formed by deep drawing.
  • Some metals, even non-magnetic materials, are hardened by plastic working and become magnetized at the same time.
  • SUS304 which is an austenitic stainless steel, has the property that when cold working such as deep drawing is performed, the structure undergoes martensitic transformation and the hardness and magnetism increase.
  • the non-magnetic material is not magnetized by plastic working rather than simply using a non-magnetic material as the core metal 132! /, And a non-magnetic material is used! / .
  • austenitic stainless steels such as SUS304L and SUS305 are used. Therefore, even if the core bar 132 is complicatedly bent and interposed between the magnetic sensor 134 and the pulser 147 (especially the magnetic encoder 151) as in this embodiment, the detection accuracy of the magnetic sensor 134 is Will not be affected.
  • SUS304L has a larger amount of nickel that has less carbon than SUS304.
  • the present invention is not limited to the above-described embodiment, and the design can be changed as appropriate.
  • the material of the cored bar 132 is not limited to those described in the above embodiment, and any material that is difficult to be magnetized by plastic working can be used.
  • the types of plastic working include deep drawing and bending, which are categorized as press working.
  • the material of the selected core bar 132 can be selected according to the processing conditions such as the processing method and temperature. it can.
  • the support member 150 and the slinger 146 that are formed only by the cored bar 132 can also be made of a nonmagnetic material.
  • the support member 150 for supporting the magnetic encoder 151 may be omitted, and the thickness of the magnetic encoder 151 may be increased so as to have the same outer diameter as that when the support member 150 is used.
  • the magnetic encoder 151 is formed by magnetizing magnetic powder using rubber as a binder. Similar to the first and second embodiments, a plastic magnet formed by binding a magnetic powder such as ferrite powder with a polyphenylene sulfide resin or a polyamide resin may be used as well as the form.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)

Abstract

L'invention concerne un dispositif d'étanchéité équipé d'un capteur pour un dispositif de palier à roulement, dans lequel une force magnétique suffisante est disponible pour le capteur, et un dispositif de palier à roulement pour un véhicule utilisant le dispositif d'étanchéité équipé d'un capteur. Un dispositif de palier à roulement (1) pour un véhicule présente un dispositif d'étanchéité équipé d'un capteur ayant une bague d'étanchéité annulaire (10) fixée à un arbre interne (2), un codeur magnétique (11) fixé en co-rotation à la bague d'étanchéité (10), un noyau (14) fixé à une bague externe (3) et ayant un élément d'étanchéité (15) en contact coulissant avec la bague d'étanchéité (10), et une section de capteur (12) ayant un capteur magnétique (13) pour détecter une rotation relative entre la bague externe (3) et la bague interne (2) sur la base d'un changement de pôles magnétiques par le codeur magnétique (11). Le codeur magnétique (11) est construit à partir d'un aimant en matière plastique comportant une poudre magnétique ayant un magnétisme orienté dans une direction prédéterminée.
PCT/JP2007/071905 2006-11-16 2007-11-12 Dispositif d'étanchéité équipé d'un capteur, et dispositif de palier à roulement apte à être utilisé dans un véhicule et utilisant le dispositif d'étanchéité WO2008059788A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US11/792,435 US20100027927A1 (en) 2006-11-16 2007-11-12 Sensor attaching sealing device and vehicle rolling bearing using the same
EP07831635A EP2085630A4 (fr) 2006-11-16 2007-11-12 Dispositif d'étanchéité équipé d'un capteur, et dispositif de palier à roulement apte à être utilisé dans un véhicule et utilisant le dispositif d'étanchéité

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2006-310307 2006-11-16
JP2006310307A JP2008128268A (ja) 2006-11-16 2006-11-16 センサ付き転がり軸受装置
JP2007-051250 2007-03-01
JP2007051250A JP2008215920A (ja) 2007-03-01 2007-03-01 センサ付き密封装置、及びこれを用いた車両用転がり軸受装置

Publications (1)

Publication Number Publication Date
WO2008059788A1 true WO2008059788A1 (fr) 2008-05-22

Family

ID=39401596

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/071905 WO2008059788A1 (fr) 2006-11-16 2007-11-12 Dispositif d'étanchéité équipé d'un capteur, et dispositif de palier à roulement apte à être utilisé dans un véhicule et utilisant le dispositif d'étanchéité

Country Status (3)

Country Link
US (1) US20100027927A1 (fr)
EP (1) EP2085630A4 (fr)
WO (1) WO2008059788A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016050674A (ja) * 2014-08-28 2016-04-11 中西金属工業株式会社 保護カバー、及び保護カバーを備えた軸受装置

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2959569B1 (fr) * 2010-04-30 2012-11-02 Snr Roulements Sa Assemblage instrumente pour fusee d'essieu et procede de montage
KR102027246B1 (ko) 2013-03-14 2019-10-01 삼성전자주식회사 디지타이저 및 그 제조 방법
JP6432125B2 (ja) * 2013-10-24 2018-12-05 中西金属工業株式会社 磁気エンコーダ、及び磁気エンコーダを備えた軸受装置
TWI531807B (zh) * 2015-01-08 2016-05-01 國立臺灣大學 含蔽磁體之磁性元件之識別系統及其方法
GB201506138D0 (en) * 2015-04-10 2015-05-27 Skf Ab Capped bearing with vibration sensor
CN109643930A (zh) 2016-08-23 2019-04-16 洛德公司 用于磁响应装置、***和方法的磁性密封件
US11680604B2 (en) 2020-11-20 2023-06-20 Amsted Rail Company, Inc. Roller bearing seal assembly

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004264056A (ja) 2003-02-12 2004-09-24 Koyo Seiko Co Ltd センサ組立体、シール装置ならびに転がり軸受装置
JP2005134403A (ja) * 2004-12-13 2005-05-26 Ntn Corp 磁気エンコーダおよびそれを備えた軸受
JP2005133772A (ja) 2003-10-29 2005-05-26 Koyo Seiko Co Ltd シール装置およびそれを用いた転がり軸受装置
JP2005214874A (ja) * 2004-01-30 2005-08-11 Nsk Ltd エンコーダ及び当該エンコーダを備えた転がり軸受
JP2006220270A (ja) 2005-02-14 2006-08-24 Nsk Ltd ハブユニット軸受

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6789948B2 (en) * 2001-09-25 2004-09-14 Ntn Corporation Magnetic encoder and wheel bearing assembly using the same
JP2003222150A (ja) * 2002-01-31 2003-08-08 Ntn Corp 磁気エンコーダおよびそれを備えた車輪用軸受
US20040183702A1 (en) * 2003-01-23 2004-09-23 Daniel Nachtigal Magnetizable thermoplastic elastomers
JP4682532B2 (ja) * 2004-04-30 2011-05-11 日本精工株式会社 磁気エンコーダ及びその製造方法、並びに当該磁気エンコーダを備えた転がり軸受

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004264056A (ja) 2003-02-12 2004-09-24 Koyo Seiko Co Ltd センサ組立体、シール装置ならびに転がり軸受装置
JP2005133772A (ja) 2003-10-29 2005-05-26 Koyo Seiko Co Ltd シール装置およびそれを用いた転がり軸受装置
JP2005214874A (ja) * 2004-01-30 2005-08-11 Nsk Ltd エンコーダ及び当該エンコーダを備えた転がり軸受
JP2005134403A (ja) * 2004-12-13 2005-05-26 Ntn Corp 磁気エンコーダおよびそれを備えた軸受
JP2006220270A (ja) 2005-02-14 2006-08-24 Nsk Ltd ハブユニット軸受

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2085630A4

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016050674A (ja) * 2014-08-28 2016-04-11 中西金属工業株式会社 保護カバー、及び保護カバーを備えた軸受装置

Also Published As

Publication number Publication date
EP2085630A4 (fr) 2012-04-25
EP2085630A1 (fr) 2009-08-05
US20100027927A1 (en) 2010-02-04

Similar Documents

Publication Publication Date Title
US7126328B2 (en) Rolling bearing unit with rotational speed detecting device
WO2008059788A1 (fr) Dispositif d'étanchéité équipé d'un capteur, et dispositif de palier à roulement apte à être utilisé dans un véhicule et utilisant le dispositif d'étanchéité
JP5334823B2 (ja) 回転速度検出装置付き車輪用軸受装置
EP1965090B1 (fr) Anneau de pulsar magnétique, et dispositif de roulement à rouleaux avec capteur l'utilisant
JP2005042866A5 (fr)
JP4784967B2 (ja) 回転速度検出装置付き車輪用軸受装置
JP5334820B2 (ja) 回転速度検出装置付き車輪用軸受装置
JP2008116267A (ja) 着磁パルサリング
JP2013088134A (ja) 着磁パルサリング及びその製造方法、並びに転がり軸受装置
JP5061652B2 (ja) 着磁パルサリング、及びこれを用いたセンサ付き転がり軸受装置
JP4548026B2 (ja) センサ付きシール装置およびそれを用いた転がり軸受装置
JP2003307229A (ja) パルス生成環内蔵軸受およびハブユニット軸受
JP2009002385A (ja) 回転速度検出装置付き車輪用軸受装置
JP2008128268A (ja) センサ付き転がり軸受装置
JP2009036335A (ja) 回転速度検出装置付き車輪用軸受装置
JP2007064328A (ja) 転がり軸受装置
JP2009030756A (ja) 回転速度検出装置付き車輪用軸受装置
JP4736806B2 (ja) センサ付きシール装置およびそれを用いた転がり軸受装置
JP2005016990A (ja) 車輪回転速検出用エンコーダ
JP2013068475A (ja) 着磁パルサリング及びその製造方法、並びに転がり軸受装置
JP2007163395A (ja) 着磁パルサリング
JP2008286269A (ja) 回転速度検出装置付き車輪用軸受装置
JP2009019721A (ja) 回転速度検出装置付き車輪用軸受装置
JP2007255997A (ja) エンコーダ付転がり軸受
JP2008185068A (ja) センサ付き密封装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07831635

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2007831635

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 11792435

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE